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Electricity Supply Reliability: Evaluation of Improvement Solutions for Existing Electricity Networks

Roos, Fredrik LU (2005)
Abstract
Regulation of the electricity network business is continuously under

development in many countries. This is a reaction of an increasingly

electricity dependent society, which demands electricity supplies at acceptable

quality levels and at reasonable tariffs. Thus, electric network companies are

facing new requirements that change the conditions for exercising network

activities. Generally, incentives are given to the network companies to

maintain the present level of reliability in a cost-efficient way. In Norway,

however, incentives are given to the network companies to plan, operate and

maintain the networks in a socio-economically optimal way, taking into

... (More)
Regulation of the electricity network business is continuously under

development in many countries. This is a reaction of an increasingly

electricity dependent society, which demands electricity supplies at acceptable

quality levels and at reasonable tariffs. Thus, electric network companies are

facing new requirements that change the conditions for exercising network

activities. Generally, incentives are given to the network companies to

maintain the present level of reliability in a cost-efficient way. In Norway,

however, incentives are given to the network companies to plan, operate and

maintain the networks in a socio-economically optimal way, taking into

account the supply-interruption cost to the customers. Therefore, in Norway,

electricity network companies strive to identify and implement the most cost-efficient

reliability improvement projects, i.e., the projects that yield the

greatest overall reduction in supply-interruption cost to the customers for the

invested money.

In this thesis, implementations of reliability improvement solutions on a test

system have been evaluated from a socio-economical point of view. For each

of the alternative solutions implemented on the test system, the average

annual supply-interruption cost to the customers supplied from the test

system has been estimated. Furthermore, the maximum annual capital cost

associated with the implementation of each solution has been estimated.

Then, a reliability improvement solution is considered justified socioeconomically

if the capital cost associated with its implementation is less than

the resulting reduction in the interruption cost to the customers.

The general conclusion from this thesis work is that the supply-interruption

cost to the customers supplied from a test system can be reduced significantly

by implementing reliability improvement solutions that are justified socioeconomically.

Even if the uncertainty of the input data is taken into account,

it is obvious from the results that the interruption cost to the test system

customers can be reduced to at least half the initial value. (Less)
Please use this url to cite or link to this publication:
author
supervisor
organization
publishing date
type
Thesis
publication status
published
subject
pages
99 pages
publisher
Department of Industrial Electrical Engineering and Automation, Lund Institute of Technology
ISBN
91-88934-41-1
language
English
LU publication?
yes
id
61ccef27-41f1-428f-888a-653b0e7213fc (old id 587935)
alternative location
http://www.iea.lth.se/publications/Theses/LTH-IEA-1049.pdf
date added to LUP
2007-10-30 09:32:10
date last changed
2016-09-19 08:45:07
@misc{61ccef27-41f1-428f-888a-653b0e7213fc,
  abstract     = {Regulation of the electricity network business is continuously under<br/><br>
development in many countries. This is a reaction of an increasingly<br/><br>
electricity dependent society, which demands electricity supplies at acceptable<br/><br>
quality levels and at reasonable tariffs. Thus, electric network companies are<br/><br>
facing new requirements that change the conditions for exercising network<br/><br>
activities. Generally, incentives are given to the network companies to<br/><br>
maintain the present level of reliability in a cost-efficient way. In Norway,<br/><br>
however, incentives are given to the network companies to plan, operate and<br/><br>
maintain the networks in a socio-economically optimal way, taking into<br/><br>
account the supply-interruption cost to the customers. Therefore, in Norway,<br/><br>
electricity network companies strive to identify and implement the most cost-efficient<br/><br>
reliability improvement projects, i.e., the projects that yield the<br/><br>
greatest overall reduction in supply-interruption cost to the customers for the<br/><br>
invested money.<br/><br>
In this thesis, implementations of reliability improvement solutions on a test<br/><br>
system have been evaluated from a socio-economical point of view. For each<br/><br>
of the alternative solutions implemented on the test system, the average<br/><br>
annual supply-interruption cost to the customers supplied from the test<br/><br>
system has been estimated. Furthermore, the maximum annual capital cost<br/><br>
associated with the implementation of each solution has been estimated.<br/><br>
Then, a reliability improvement solution is considered justified socioeconomically<br/><br>
if the capital cost associated with its implementation is less than<br/><br>
the resulting reduction in the interruption cost to the customers.<br/><br>
The general conclusion from this thesis work is that the supply-interruption<br/><br>
cost to the customers supplied from a test system can be reduced significantly<br/><br>
by implementing reliability improvement solutions that are justified socioeconomically.<br/><br>
Even if the uncertainty of the input data is taken into account,<br/><br>
it is obvious from the results that the interruption cost to the test system<br/><br>
customers can be reduced to at least half the initial value.},
  author       = {Roos, Fredrik},
  isbn         = {91-88934-41-1},
  language     = {eng},
  pages        = {99},
  publisher    = {ARRAY(0xa31eb08)},
  title        = {Electricity Supply Reliability: Evaluation of Improvement Solutions for Existing Electricity Networks},
  year         = {2005},
}